Electronic air conditioner/heater module

Tiny
MONTEB
  • MEMBER
  • 1991 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • MANUAL
  • 220,000 MILES
Electronic air conditioner/heater control module quit working. I have checked all relays and fuses and circuit breakers. I have traced out all wires and cannot find anything wrong. Do you have any ideas on the subject?
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Thursday, August 18th, 2016 AT 6:20 PM

3 Replies

Tiny
CARADIODOC
  • EXPERT
Failed HVAC Computer. Very common problem. If you do a search, you should find a number of places that repair and rebuild them. If you know what to look for, you might pop the covers off and look for broken solder connections.
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Thursday, August 18th, 2016 AT 6:24 PM
Tiny
MONTEB
  • MEMBER
Where is HVAC computer located and what does it look like on my truck?
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Thursday, August 18th, 2016 AT 10:01 PM
Tiny
CARADIODOC
  • EXPERT
It is about a 5" x 5" black plastic box. The front of it is the control panel.
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Thursday, August 18th, 2016 AT 11:55 PM

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